a = 1;
b = 2;
c = 1;
d = 2.05;
e = 'aa'
f = 'bb';
g = 'aa';
print('a > b ?:' + str(a > b))
print('a = c ?:' + str(a > c))
print('a = d ?:' + str(a == d))
print('e = f ?:'+ str(e == f))
print('e = g ?:'+ str(e == g))
print('eId = gId ?:'+ str(e is g))
print('aId = aId ?:'+ str(a is c))

# 布尔运算符 and
print('and :' + str((a == c and a != b)))
# 布尔运算符 or
print('or :' + str((e == f or a == c)))
# 布尔运算符 字符串in 某个字符串是否包含子字符串
h = 'hmh'
print('字符串in :' + str('a' in h))